Interactive View-Dependent Rendering Of Large Isosurfaces
- Author(s): Gregorski, Benjamin F.
- Duchaineau, Mark A.
- Lindstrom, Peter
- Pascucci, Valerio
- Joy, Ken
- et al.
We present an algorithm for interactively extracting and rendering isosurfaces of large volume datasets in a view-dependent fashion. A recursive tetrahedral mesh refinement scheme, based on longest edge bisection, is used to hierarchically decompose the data into a multiresolution structure. This data structure allows fast extraction of arbitrary isosurfaces to within user specified view-dependent error bounds. A data layout scheme based on hierarchical space filling curves provides access to the data in a cache coherent manner that follows the data access pattern indicated by the mesh refinement.